Tadaaki Kuwayama's "No. 1" exemplifies the artist's minimalist approach to abstraction, employing acrylic and pigment on Japanese paper to create a work that emphasizes material subtlety and chromatic restraint. The use of Japanese paper mounted on canvas reveals Kuwayama's interest in bridging Eastern and Western artistic traditions while foregrounding the painting's surface qualities. This work reflects the artist's systematic exploration of color relationships and spatial perception that defined his practice from the 1960s onward.